Three 18-year-old boys, Wang Zha, Chengyong and Pao Pao, accidentally fall into a lake with flashy colors. When they get out, they realize they can travel back and forth 20 years into the future with a sneeze. But the future is not what they expected. The boss of a crime organization plans to take over the world. As
a reporter, Wang Zha unveils the crime and discovers that Chengyong is a part of it, while Chengyong finds out his girlfriend is now with Pao Pao.
In order to defeat the evil plans, the trio go back to the past and train themselves relentlessly for 20 years to develop athletic bodies. They manage to defeat the bad guys and save the world. In order to prevent their super power from causing damage, they erase their future selves, and go back 20 years to live their better lives.